Question 1
Find the spherical coordinate equation of the surface x
2 + y
2 + z
2 = 2z.
◦ R = 2cos(θ)
◦ R = 1
◦ z =

◦ R
2 - 2R = cos(φ)
◦ R = 2cos(φ)
Question 2
If A is a k × m matrix and B is an m × n matrix, then BA is the transpose of AB.
◦ true
◦ false